An atom can be compared to our solar system because: The nucleus gives off light like the sun. Both electrons and planets move quickly. Electrons orbit the nucleus like planets orbit the sun. All of the above.

If you combined neon, argon and helium together, what would you expect to happen?

In a coffee-cup calorimeter, 50.0mL of 0.100M AgNO3 and 50.0mL of 0.100M HCl are mixed to yield the following reaction:Ag + (aq) + Cl - (aq) - --> AgCl (s) The 2 solutions were initially at 22.60 degree C, and the final temperature is 23.40 degree C.

What do you think is the most important step in the scientific method? why?

Which substances form a homogeneous mixture when mixed with water? A. Salt B. Vinegar C. Mud D. Milk E. Iron Fillings F. Cement

Electric charge A. discovery b. Radiation c. electricity d. Kinetic energy

A compound present in aft

Potassium-40 (40k) is a radioactive isotope of potassium (atomic number 19). how many neutrons are located in the nucleus of potassium-40?

Why do alligators need a warm climate? A. They need to live in a place with enough food. B. They cannot produce enough heat to keep their bodies warm. C. They have scales rather than hair, which keeps them too hot. D.

What human body system can be fossilized? Explain

A reaction mixture initially contains 22.02 g Fe2O3 and 14.66 g CO. Assume that the reaction will progress to 100% completion. What mass (in g) of the excess reactant is leftover?